Worm composting bin



FIG. 1 is a front top left perspective view of a worm composting bin;

FIG. 2 is a rear bottom right perspective view thereof;

FIG. 3 is a top front view thereof;

FIG. 4 is a bottom front view thereof;

FIG. 5 is a front bottom left view thereof;

FIG. 6 is a front bottom right view thereof;

FIG. 7 is a front elevational view thereof;

FIG. 8 is a rear elevational view thereof;

FIG. 9 is a top plan view thereof where the bottom plan view is identical thereto;

FIG. 10 is a left elevational view thereof, where the right elevational view is identical thereto;

FIG. 11 is a front top left view of the present invention in an alternate configuration; and,

FIG. 12 is a rear bottom right view of the present invention in an alternate configuration.

The broken line showing a cover, a handle, and wheels in FIGS. 11-12 is included for the purpose of illustrating environmental structure and forms no part of the claimed design. 

CLAIM The ornamental design for a worm composting bin, as shown and described. 